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Title: Properties of hydroxyapatite/zirconium oxide nanocomposites
Authors: Winatsara Kantana
Parkpoom Jarupoom
Kamonpan Pengpat
Sukum Eitssayeam
Tawee Tunkasiri
Gobwute Rujijanagul
Keywords: Chemical Engineering
Materials Science
Issue Date: 1-May-2013
Abstract: Effects of zirconium oxide (ZrO2) nanoparticles additive on the microstructure and physical properties of hydroxyapatite (HA) were investigated. The HA powder was derived from natural bovine bone by a sequence of thermal processes. The composites containing nanoparticles of ZrO2(0.2-1.0 vol%) were fabricated by a solid-state reaction mixed oxide method. All samples showed traces of HA, beta-tricalcium phosphate (β-TCP) and alpha-tricalcium phosphate (α-TCP) phases while the x≥0.1 samples also showed ZrO2phase. Amount of β-TCP and α-TCP phases tend to decrease with ZrO2. The additive inhibited grain growth as a result of a decrease in grain size. However, the x=0.2 sample exhibited higher hardness value which is consistent with the density data. In addition, bioactivity test suggested that the additive promoted an apatite forming with the values of Ca/P close to the value obtained from HA. © 2013 Elsevier Ltd and Techna Group S.r.l.
ISSN: 02728842
Appears in Collections:CMUL: Journal Articles

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